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Leya [2.2K]
3 years ago
9

Why do scientists use scientific notation to represent very small and large numbers?

Chemistry
1 answer:
Neporo4naja [7]3 years ago
6 0
Scientific notation is a system for writing and working with numbers that makes it much easier to deal with numbers that are very small or very large. 3 000 000 000 000 000 000 000 000 000 000 000 000 000 tons, ... This makes it convenient to represent very large or very small numbers using exponential notation.
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In Universe L , recently discovered by an intrepid team of chemists who also happen to have studied interdimensional travel, qua
Sergio [31]

Answer:

See explanation

Explanation:

The third and fourth elements in the first transition series are vanadium and chromium. They contain 23 and 24 electrons respectively.

In universe L, the electron configuration of vanadium is;

[X]  3d3 4s2

In universe L, the electron configuration of chromium is;

[X] 3d4 4s2

The electron configuration of chromium has to change since there are four instead of five d orbitals in universe L.

8 0
3 years ago
Hydrochloric acid has the chemical formula HCl. A certain quantity of hydrochloric acid has 2.39x1024 atoms. How many moles of h
nasty-shy [4]

Answer: 3.97 moles HCl

Explanation: Solution:

2.39x10²⁴ atoms HCl x 1 mole HCl /

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8 0
3 years ago
Its silver tarnishing physical or chemical change.
Mrac [35]
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3 0
3 years ago
a weather balloon is filled with 200L of helium at 27 degree Celsius and 0.950 atm. What would be the volume of the gas at -10 d
Charra [1.4K]

<u>Answer:</u> The volume when the pressure and temperature has changed is 1332.53 L

<u>Explanation:</u>

To calculate the volume when temperature and pressure has changed, we use the equation given by combined gas law. The equation follows:

\frac{P_1V_1}{T_1}=\frac{P_2V_2}{T_2}

where,

P_1,V_1\text{ and }T_1 are the initial pressure, volume and temperature of the gas

P_2,V_2\text{ and }T_2 are the final pressure, volume and temperature of the gas

We are given:

P_1=0.950atm\\V_1=200L\\T_1=27^oC=[273+27]K=300K\\P_2=0.125atm\\V_2=?L\\T_2=-10^oC=[273-10]K=263K

Putting values in above equation, we get:

\frac{0.950atm\times 200L}{300K}=\frac{0.125\times V_2}{263K}\\\\V_2=1332.53L

Hence, the volume when the pressure and temperature has changed is 1332.53 L

5 0
3 years ago
Explain how the ecosystem that you selected follows the law of conservation of mass and the law of conservation of energy. It is
trasher [3.6K]
In the ocean, light is used by phytoplankton in order to produce sugar.  10% of the energy from the sun is available to the zooplankton that eat the phytoplankton, the rest of the energy is lost as heat or through powering body building/functions/reproduction.  Whatever eats the zooplankton receives 10% of that energy in order to grow
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4 years ago
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